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dc.contributor.author
Krabbe, A.
dc.contributor.author
Rosa, D. A.
dc.contributor.author
Dors Jr., Oli L.
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Pastoriza, Miriani G.
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Winge, C.
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Hägele, Guillermo Federico
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Cardaci, Monica Viviana
dc.contributor.author
Rodrigues, Irapuan
dc.date.available
2017-04-12T14:49:53Z
dc.date.issued
2014-01
dc.identifier.citation
Krabbe, A.; Rosa, D. A.; Dors Jr., Oli L.; Pastoriza, Miriani G.; Winge, C.; et al.; Interaction effects on galaxy pairs with Gemini/GMOS- I: electron density; Wiley; Monthly Notices Of The Royal Astronomical Society; 437; 2; 1-2014; 1155-1170
dc.identifier.issn
0035-8711
dc.identifier.uri
http://hdl.handle.net/11336/15206
dc.description.abstract
We present an observational study about the impacts of the interactions on the electron density of HII regions located in seven systems of interacting galaxies. The data consist of long-slit spectra in the range 4400-7300 A, obtained with the Gemini Multi-Object Spectrograph at Gemini South (GMOS-S). The electron density was determined using the ratio of emission-lines [S II] lambda 6716/ lambda 6731. Our results indicate that the electron density estimates obtained of HII regions from our sample of interacting galaxies are systematically higher than those derived for isolated galaxies. The mean electron density values of interacting galaxies are in the range of Ne = 24 - 532 cm^{-3}, while those obtained for isolated galaxies are in the range of Ne = 40 - 137 cm^{-3}. Comparing the observed emission lines with predictions of photoionization models, we verified that almost all the HII regions of the galaxies AM1054A, AM2058B, AM2306B have emission lines excited by shocks, such as in AM2322B (one point) and AM 2322A (four points). No correlation is obtained between the presence of shocks and electron densities. Indeed, the highest electron density values found in our sample do not belong to the objects with gas shock excitation. We emphasize the importance of considering theses quantities especially when the metallicity is derived for this type of systems.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Wiley
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Interstellar Medium
dc.subject
Galaxies
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Interaction of Galaxies
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Astronomía
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Ciencias Físicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Interaction effects on galaxy pairs with Gemini/GMOS- I: electron density
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-03-27T15:55:39Z
dc.journal.volume
437
dc.journal.number
2
dc.journal.pagination
1155-1170
dc.journal.pais
Reino Unido
dc.journal.ciudad
Londres
dc.description.fil
Fil: Krabbe, A.. Universidade Do Vale Do Paraiba; Brasil
dc.description.fil
Fil: Rosa, D. A.. Universidade Do Vale Do Paraiba; Brasil
dc.description.fil
Fil: Dors Jr., Oli L.. Universidade Do Vale Do Paraiba; Brasil
dc.description.fil
Fil: Pastoriza, Miriani G.. Universidade Federal Do Rio Grande Do Sul; Brasil
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Fil: Winge, C.. Gemini Observatory; Chile
dc.description.fil
Fil: Hägele, Guillermo Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Astrofísica de la Plata; Argentina; Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
dc.description.fil
Fil: Cardaci, Monica Viviana. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; Argentina; Argentina
dc.description.fil
Fil: Rodrigues, Irapuan. Universidade Do Vale Do Paraiba; Brasil
dc.journal.title
Monthly Notices Of The Royal Astronomical Society
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1093/mnras/stt1913
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article-lookup/doi/10.1093/mnras/stt1913


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